Solid 60 fps playing melee, moderate input lag on controller. (Using wii u adapter)

[Stagon]

Hello everyone, I'm new here. I just got this PC up and running, and I have a solid 60fps when I'm playing. However, I feel like there's input lag on the controller. When I play melee, sometimes my character doesn't start running when I put in the inputs to run. Same goes for grabbing. Is this normal for melee? I haven't played the game in roughly 8 years, but I do NOT remember inputs being this drastically slow.

I'm wondering if anyone can give me some insight into fixing this.

Thanks!